Telegraphic transmitter.



N0. 877,914, PATENTED FEB, 4. 1908. P. B. DELANY. TBLEGEAPHIGTRANSMITTER.

APPLIOATIO'N FILED MAR.31.1906.

LINE- I J g n EIG -Q i i o E I h PATRICK B. DELANY, or some ORANGE, NEWJERSEY.

'rnnnermrnrc 'rnansm'rirnn.

Specification of Letters Patent.

Patented Feb. 4, 1908.

Application filed March 31. 1906. Serial No. 309.042.

To all whom it may concern:

Be it known that I, PATRICK B. DELANY,

' a citizen of the United States, residing at arrangement, any

South Orange, county of Essex, State of New Jersey, have inventedcertain new and useful Improvements in Telegraphic Transmitters, ofwhich the following is a s ecification- This invention relates to t atclass of trans-- mitters in which a neutrally disposed key is moved inone direction for transmission to line of dots, formed automatically bytransmitting devices, the number of. dots transmitted being dependent uon the length of time that the key is so hel .by the operator: and, whenthe key is moved in opposite direction a dash is transmitted during theperiod the key is so held or in cable working, dots automatically formedmay be transmitted when the key is in the latter or dash position. Thepresent invention comprises an improvement u on the organization shownin my ap lication No. 262,097, filed May 24, 905 w ich discloses andclaims a transmitter of the general character herein described. Theclaims in this application are limited to such improvement, or detailstructure and broader subject matter that may be read u on thetransmitter herein disclosed being 0 aimed, or to be claimed, in saidapplication Serial No. 262,097. 7 -The im rovement constituting thesubject matter 0 the resent application is an arran ement offtiieapparatus by which a single ocal batterymay be used in conjunction withtwo ma ets one for sending signal impulses into t e line, and the otherfor controlling the circuit of the first one.

In the accompanying drawings: Figure 1 is a diagrammatic view showin anor anization of transmitting devices or sent ing, in the manner stated,dot and dash signals according to the Morse or other similar codez Fig.2, a similar view showing an organization for cable transmission inwhich uniform impulses are transmitted, those of one p0 lanty reresenting dots, and those of the apparatus are shown in other das es.

Referring to Fig. 1, the various parts of the normal or inactiveposition, the line I11b8l1'1 closed at two-point switch a, as convenienty located for the op-, erator. as is the switch of an ordinary Morsekey. The key I; rocks about an axis 0 but is normally maintained incentral or neutral position by a spring d attached'to the key Tandheldbetween pins or posts 6. If the key into the line through contacts a,11).

be moved to the right, current from local battery f will pass by; wire gto magnet h; thence by wire 11 to contact? carried by the armature leverof another magnet, and by contact t and wire is to key contact m. Magneth is energized and its armature lever being attracted,

- its insulating contacts n, 0 come together,

thereby closing, through wire p, the circuit of magnet q, whose circuitis y wire 1", to local battery f and by wire s to contact 11,. Thearmature lever q being attracted, contact 7' carried thereby passes outof engagement with stationary contact t, the circuit of magnet h isopened and its armature lever returning to normal of ma net q. In t isway automatic actuation oi botharmature levers at uniform rate or speedis set up and will be maintained as loglig as the key is held to theright or dot s1 e.

it represents a main battery or source of energy having one olegrounded, and its other pole connected with a contact stop 1), againstwhich bears an insulated contact w, carried by armature lever of h, andconnected plosition breaks the circuit to line as, so that automaticallyuniformly spaced or formed dots Will be transmitted from the battery tointo the line during the period that the key is held against its contactm, the number of .dots so transmitted being dependent upon the period oftime during which the key is so held. Since the dot signals are locallyaudibl manifested to the operator by the action 0' the a paratus, heknows how long the key shoulil be held in position to effecttransmission automatically of the desired number of dots.

When the is 'moved to the left, the circuit of i'nagnet 7b is closedthrough the key contact y, wire a, winding of magnet h and wire 9 tolocal batter f and thence to the key. A dash signal 0 any desired periodor length may therefore, at will, be transmitted When the operatordesires to practice manipulation of the key without transmission of thesig-' nals into the line, switch a is closed; and

when he desiresto transmit a message to. line, the switch is opened,thereby putting I the line and battery contacts w, c, in-transmittingcirc uit.

It is contemplated that with the exception of the finger 'iece of keyI), and knob of switch ct, all 0 the ap aratus, with-its single cell ofdry battery, wi 1 be inclosed in a suitable box, making it compactandportable.

I from the best style of electro magnetic transmitter; and that will beentirely independent of the operators style of Morse manipulation so faras (lots are'concerned. All of the connections of the devices when thekey is closed to one side or the other are effected with precision anduniformity, both as to each signal and as to the regularity and precision of the formation of a series thereof.

The speed of automatic formation of dots may be regulated by changingthe play of one of the armature levers, preferably that of magnet g,leaving the gap between the transmitting conta zts e, w, unchanged. Theimpulses transmitted to line by this instrument, formed with suchprecision and uniformity, will carry further and at greater speed oftransmission than those of ordinary Morse keyworking. Moreover theoperator is relieved from muscular and nervous strain since heis'required to make forty-eight less movements intthe formation of theMorse alhabet than are required with ordinary l orse key working.Obviously the lever of either electro magnet may carry the linetransmitting contact.

Fig. 2 shows diagrammatically anorganizatio n, in accordance with thisinvention, for cable transmission in which all of the impulses sent toline are dots. The local connection for both sidcs are the same as thosefor the dot side illustrated in Fig 1, except that the armature lever ofmagnet q carries the line transmitting contact w, and key 1) is -movedto the left for transmitting short signals representing dots, and to theright for transmission of short signals of opposite polarityrepresenting (according to the cable code) dashes. The connections forthe dot side are lettered the same as in Fig. l, and those for the dashside have the same lettering with the exponent 1, added in eachinstance. The pole changing arrangement for the main or transmitterbattery, or source 4, is that usuallyemployed in cable working.

I claim as my inventionz l. A telegraphic transmitter comprising thecombination. of a transmitting key, a single local battery, its circuit,an electromagnet connected in the local circuit with the battery andkey, said magnet being energized when the local circuit is closed by thekey', and a second. electro magnet also connected in local circuit withthe battery, and contacts and circuit connections wherebywhen the [i'rstnamed magnet attracts its armature lever the circuit of the secondmagnet is closed, and on attraction of its armature lever, the circuit01 the first magnet is opened, and line transmitting contacts controlledby one of such magnets, whereby so long as the .-key.closes the. localcircuits of the first magnet the circuits of both magnets areautomatically opened and closed at a regulated uniform rate andtransmission of a succession of dot signals effected.

2. A telegraphic transmitter com rising the combination of atransmitting .ey, a single local battery, its circuit, an electro magnetconnected in the local circuit'with the battery and key, said magnetbeing energized when the local circuit is closed by the key, and asecond electro magnet also connected in local circuit with the battery,normally separated contacts included in the circuit of the second magnetand controlled I by the armature lever of the first magnet, adapted toautomatically close when the armature lever of the first magnet is attracted, normally closed contacts controlled by the armature lever ofthe second magnet included in the local circuit of the first mag net,and automatically opened when the ct. is ated by one armature lever ofthe second ma tracted, and line contacts control of said 1nagnets. 1

3. A telegraphic transmitter comprising the combination of a localtransmitting member, a local battery, itscircuit, an electro( magnetconnected In said local circuit with said battery andtransmittingmember, said magnet being energized when the said local,

circuit is'closed by said transmitting mem ber, a second electro magnetalso connected with the said battery, line transmitting-con tactscontrolled by one of said electro magnets, contacts and circuitconnections whereby when the first electro magnet attracts its armaturelever the circuit of the second electro magnet is closed, and onattraction of its armature lever the circuit of the first electro-ma netis opened, whereby, so long as the loca transmitting member closes the'local circuit of the first electro-magnet, said electro-magnet and'thesecond electro-magnet are automatically opened and closed and asuccession of impulses sent-into the line by the line connectedcontacts.

4. A telegraphic transmitter comprising the combination of a localtransmitting member,- a source of electric ener y eon-' nected thereto,two electro magnets a so eonnectcd to said source of electric-energy,contaets in the path of said transmitting member whereby the circuit ofsaid source of electric energy may be completed through either of saidelectro ma nets separately, two other electro-magnets a so connected tosaid source of electric energy, contacts controlled by the first twoelectro-magnets, whereby said souree' of electric ener y is completed 1through the second two electro-magnets and contacts controlled by thesecond two electro-magnets for opening the circuits of the lie first twoeleotto msgnets, whereby automatic vihre-tionof the armature levels ofone of the first two elects-magnets and one of the second two al z'osets is produeed and maintained so iong' as t Zoos transmitting memberis hehi egeiinst of contacts, and whereby, automate e vihretion oi. thearmature levers oi the other the two eleotro-megnets and other of secondtwo ele'otro-megnets is produced. and maintained sobng as the localtransmitting memher is held against its other Contact, and line Iconnected contacts controlled by two of said armature levers for sendingautomatically made signal impulses to a distant station.

In testimony whereof, I have hereunto subscribed my name.

PATRICK B. DELANV.

' L. F. BROWNING,

t Vhtnesses t E. F. WICKS.

